Grain separator



Aug. 14, 1923. 1,4644% E. ANDERSON GRAIN SEPARATOR FiI ed March '16 1921 EdQMI-dA 722 616072 Patented Aug. 14, 1923.

nnirs stars Lltdgidl entrant series.

EDWARD ANDERSON, 0F MINNEAPOLIS, MINNESOTA.

GRAIN snrannron.

I Applicationnled March 16, 1921. Serial No. 452,835.

State of Minnesota,- have invented certain new and useful Improvements in Srrain Separators, of which the following is a specification.

This invention relates to grain cleaning devices, and more particularly to rotary means for separating the grain from for-- eign substances, such as wild oats, weed seeds, or such other matter as will readily pass through an initial screen for initially extracting the chaff from the bulk or the grain.

An object of the invention is to'provide improved grain separating means, wherein each kernel is caused first to be rolled around'its longitudinal axis and then deposited in a pocket or indent of predetermined size for the purpose of grading, and conducted to a suitable destination.

A further object of the invention is the provision of a device of the class described, wherein the kernels, after passing through the chad separating screen, fall upon two upwardly diverging surfaces moving constantly in upward direction to cause the kernels'to roll down hill as distinguished from some present methods of sliding and grinding back and forth on a wire or perforated metal screen thereby bruising thehulls. a

A still further object of the invention is the provision of simple practical, eiiicient and economic means for grading as to size,

spective views of sections of the peripheral 7 surface of the cylinders showing on an enweed seed chute.

larged scale, the cavities or indents in the surfaces of the cylinders.

Figure 8 is a fragmentary sectional view on line S S of Figure 7.

Figure 9 is a-fragmentary sectional view on'line 9-9 of Figure 6 showing the adjacent cylinder and the position the kernels assume.

Figure 10 isa similar view, showingtwo rodents in opposite relation.

Figure 11 is a front View, partly in section, of one of the cylinder journals and Figure l2 is a perspective view, partly nals. p

A designates the frame, B the chaff separating screen, B the grain chute, C and G the wheat and oat separating"cylinders, C" the wheat chute, D and D the wheat and weed seed separating cylinders and D the in section, of another of the cylinder jour-' ing laterally across the frame and journaled in the ournal boxes 3, so that it may be reciprocated longitudinally of the frame, the screen having the usual perforated floor 4, through which the kernels separated from the chaff, pass. Under the screen is the preferably stationary grain chute B, ar-

ranged in parallelism with the screen and iaving a central contracted spout 5 adjacent one end of the frame. 'Journaled in the journals Band H respectively, at one end, and in the journals I with their other ends, are the shafts 6, arranged in naral lelism, one for each of the cylinders C, the journals being positioned so asto bring the two cylinders into peripheral contact and incline the same in opposition to the screen B. Each cylinder is partially surrounded in spaced relation, by a shield 7, the shields extending in opposite directions from a point above. and midway between the cylinders to a point below and 'll'lltlWElY between the cylinders, the lower portion 8, of the shield forming a clownwardly'and inwardly directed slide, whereand bythe grain is conducted to the longitudi V nalcentral gap 9 formed between the lower frameis iormedfat s 1 edges of the'shields; The upper edges of the shields are also spaced toQlprm the lon; gitudinal central from the spout 5. 7

Mounted directly under the cylinders C and C are the cylindersD and Dl'these cylinders being mounted respectively in similar journals and in peripheral contact ing relation, but inclined in opposltlontov the first named cylinder s. Further, they are similarly shielded; so as to form upper and lower tions 18.

' The chute D" howevenis preferablyinclined in opposition toth'e cylinder and D to carry the materialfawaygfrorn the machine The end upon which the supply hopper}; is mounted, may, be termed, the feedend of the machine, the latter aisqe saaieng the end, conneoted with a 'source oflpower; The "'d feedj' nd; with an g'hts 142, wherein are extens on having upri -v (not shown).

Rigidonieach of the shafts and 16, ad-

jacent the uprights 14, and facing; one an other are the miter gears 23; each meshing with one of; the beveLgearS2L of which there r is one for each shaft GI Thus when the shafts arerotated each. cylinder 0117a pair willrotate in opposite direction to its mate, asfindicated the arrows, in Fig.v 3. As shown the cylinders will rotate from below upwards and, toward" each other, so, that, kernels of grain falling from above between;

the cylinders will; be agitatedgby the constant tendency to adhere to the upwardly moving peripheral surfaces of the cylinders (see'FigureQ),

Ifor the purpose of maintaining. a perfect. peripheral. contact between the cylinders, and avoiding the necessity of having aloso lutely true; cylinders, I, provide both ends ofthe left; hand cylinders Cl, andDf- (Fig.;

2) with aspring pressedjournalbox sothat the cylinder will'be' I held under stress Of thespring, in contactingrelationwith the ad a \l v l I i l v jacent. cylinder, This journal, whichis'designa ted the letter the v foregoing, comprises a, verticalj plate 25. havingpa pair" of vertically slotted bolt holes 265 v said plate for i ed witli a hub havinga transv erse bore o e abl ei ea e s enl h t- V ,tcr e'xtending at] right angles to the journal;

- box 29 whereinrota-tes the shaft 6. Qp;

positely aligned ith the b0 162? na in 30,;said jo1 1 rnaled boa and lug being adaptgaps af eld-12, and slide por-v ed to hold under stress'between thein the coil: 7

spring 31 Obviously, the journal box may I thus he slid laterally with respect to the ma chine; frame; while the slotted holes 26 permitthe angle of inclination of the cylinders v to be changed tomeet conditions of the worlr in hand. The; cylinders (hand D are provided at, the discharge end with the ournal H; comprising slotted bolt hole adjustment similar, to ourn-al Gr but having the journal box BZTornied with transverse trunnions r At the feed end ofjthe machine, lthesetcylinders are preferably providedwith the jonr- 'nal L'ShOWn lIl Figure 12,.wherein the jcur nal boxis trunnioned similar to 'boi; H -but isformed with a vertical threaded shank] 34, having threaded nuts 35. whereby the- 7 cross; tin ber: 36 may befir nly clamped b e-- tween them. Thus the cylinders be ad justecl,to -keep the gearsQA: properly aligned the; cylinders G vand D- rotate clockwise while; C2 and D rotate counterclockwise.- Profusely d str buted over; thejentne snr-l face ofrthe cylinders C anQClJC are the in: dents in pockets-87, '(see Figs. 7 andfiS); of

a size toloosely receive a kernel "of Wheat 7 the. side wall, 88; and; the bottom izfibeing so 'inclinecl-,f(see F 1 0.) relative-tozeach other and; the cylinderyso that the bottom- 39 will the indent 'ispositioned;inythe plane of; the

shafts 6. 'llhus the grain in the crotch formed by the rollsis caught up in the indents .an'clcarried' over the '.top; and dischargedthrough the gap; 9 on to the chute C 'As 'indicated in dottedlines in'Figure 7, oatscannotlodge in these indents, as the latter are too small The oats will travel in crotch off-the cylinders and be discharged onto the sl de C-.". V 'lll'ie; cylinders D and-D7 are pittedg or indentechin likemanner, excepting as to the size; of the indent, these latter with the gears-"23. fAs hereinhefore stated, 7

r be: inclined upwardly and outwardly, when being Qfi much-smaller dimension to catch.

all small matter such as weed seeds, and the like, whichqlatter aredischarged onto the chute D ewhile thewheat issdischa'rgedi. V

from the crotch of-the cylinders to the slide D. F1gures; 6 ancl 9,e serveto illustrate,

the relative difference in size of the i ndents.

small-seeds beingshown.lodgediboth in the crotch 0f,- the cylinders 'and'in' gthe indents;

Figures 4: and 5z serve to; illustrate the man-.

ner of distributing? the indents, which latter may be very closely spaced. The cranlc lO of theshaft lh is 'connectedby means ofthe connecting rod 11 to the screen'B sothat the latter'will' b'e reciprocateda concurrently with the rotation of the cylindersi I claim: 1; Inamac'hine for separating ikernelsg-a 1 pair of rotatable' cylindersin longitudinalf peripheral contactlngirelatioir "and provided with-peripheral indents; each indent-formed;

with an undercut-'kernelvsupportingseat; the-13 indents of one cylinder opposing and cooperating with those of the companion cylinder to form composite kernel-receiving pockets, the undercut of each indent extending downwardly from the peripheral line of contact between the cylinders.

2. A machine for separating kernels of specific size from a mixture of kernels of varying sizes, comprising rotatable cylinders in longitudinal peripheral contacting relation, the axes of rotation thereof lying in an inclined plane, means for rotatingsaid cylinders in a direction away from each other, grain screening devices above said cylinders having a spout for discharging the grain onto and between said cylinders and at a position adjacent the inclined ends thereof, and undercut pockets on the circumferential surface of the cylinders, constructed for a specific size of kernel engaging individual kernels of said specific size to carry them bodily upward, the pockets of one cylinder coacting with those on a companion cylinder and opposing each other along their line of contact. 1

3. A machine for separating grain from foreign substances, consisting of pairs of rotatable cylinders one pair directly above the other, the axes of rotation of the cylinders of each pair lying in an inclined plane, said pairs being inclined in opposite direc-- tions, each pair of cylinders being longitudinally in peripheral contact and having cavities of uniform size throughout their circumferential surfaces, the cavities of one pair being larger than those of the other,

each cavity being formed with a shoulder capable of holding an individual kernel in a manner to carry the latter from a position midway of and above the cylinders to and over the top thereof, means for discharging grain onto the upper pair of cylinders at a position midway between them and adjacent the elevated end thereof, and means between the pairs of cylinders for conducting the kernels carried over the upper cylinders to the elevated end of the lower pair of cylinders.

4. In a grain separator, a frame, vertically spaced pairs of cylinders, means adjustably and rotatably supporting the cylinders on the frame, a screening device supported on the frame above the cylinders, and shields inclosing the outer portions of the pairs of cylinders and functioning to guide the screenings from the device to the cylinders and from the latter.

5. In a grain separator, a pair of cooperating cylinders having peripheral grain-separating formation, a shielding device in closing the cylinders at their outer portions and separated above to provide an entrance to the line of contact between said cylinders, said shielding device confining the separated grain in its movement over the cylinders, and means for conveying the separated grain from the shielding device.

6. In a grain separator, superposed pairs of grain separating cylinders, said pairs inclining in opposite directions, a shield for the outer portion of each cylinder separated from the companion shield to provide an entrance space between the cylinders of each pair, said shields of each pair converging on the underside thereof to collect and deliver the separated grain, and a trough receiving the collected grain from the upper pair of shields for delivering the same between the lower pair of shields at the upper end of the lower pair of rolls.

7. In a grain separator, superposed pairs of grain separating cylinders, said pairs in.

clining in opposite directions, a pair of shield sections for each pair of cylinders separated above and below the respective pairs for providing entrance and delivery openings, the shield sections for the upper pair of cylinders delivering into the lower pair of cylinders.

In testimony whereof I affiX my signature.

EDWARD ANDERSON. 

